python 压缩图片

这个需要16和14ms：

  

   

    

     

    
    

     

      import numpy as np
     
    
   

    

     

    
    

     

      import cv2
     
    
   

    

     

    
    

     

      import time
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      path='d:/1.jpg'
     
    
   

    

     

    
    

     

      for i in range(10):
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       img=cv2.imread(path)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       start=time.time()
     
    
   

    

     

    
    

     

       img_encode = cv2.imencode('.jpg', img)[1]
     
    
   

    

     

    
    

     
 # imgg = cv2.imencode('.png', img)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       data_encode = np.array(img_encode)
     
    
   

    

     

    
    

     

       str_encode = data_encode.tostring()
     
    
   

    

     

    
    

     

       encode_t=time.time()-start
     
    
   

    

     

    
    

     

       nparr = np.fromstring(str_encode, np.uint8)
     
    
   

    

     

    
    

     

       img_decode = cv2.imdecode(nparr, 1)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       print('time',encode_t,time.time()-start)
     
    
  
 

这个也是13和17ms

  

   

    

     

    
    

     

      def b():
     
    
   

    

     

    
    

     

       path = 'd:/1.jpg'
     
    
   

    

     

    
    

     

       for i in range(10):
     
    
   

    

     

    
    

     

       start = time.time()
     
    
   

    

     

    
    

     

       img = cv2.imread(path)
     
    
   

    

     

    
    

     

       encode_t = time.time() - start
     
    
   

    

     

    
    

     

       start = time.time()
     
    
   

    

     

    
    

     

       cv
     
    
  
 

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/88261598